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test: add openat2() test for invalid upper 32 bit flag value

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Test that openat2() rejects unknown flags in the upper 32 bit range.

Link: https://lore.kernel.org/r/20210528092417.3942079-4-brauner@kernel.org
Cc: Richard Guy Briggs <rgb@redhat.com>
Cc: Aleksa Sarai <cyphar@cyphar.com>
Cc: linux-fsdevel@vger.kernel.org
Reviewed-by: Richard Guy Briggs <rgb@redhat.com>
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
This commit is contained in:
Christian Brauner 2021-05-28 11:24:17 +02:00
parent cfe80306a0
commit 15845cbcd1
No known key found for this signature in database
GPG Key ID: 91C61BC06578DCA2
1 changed files with 6 additions and 1 deletions
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7
tools/testing/selftests/openat2/openat2_test.c
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@ -155,7 +155,7 @@ struct flag_test {
int err;
};
#define NUM_OPENAT2_FLAG_TESTS 24
#define NUM_OPENAT2_FLAG_TESTS 25
void test_openat2_flags(void)
{
@ -229,6 +229,11 @@ void test_openat2_flags(void)
{ .name = "invalid how.resolve and O_PATH",
.how.flags = O_PATH,
.how.resolve = 0x1337, .err = -EINVAL },
/* currently unknown upper 32 bit rejected. */
{ .name = "currently unknown bit (1 << 63)",
.how.flags = O_RDONLY | (1ULL << 63),
.how.resolve = 0, .err = -EINVAL },
};
BUILD_BUG_ON(ARRAY_LEN(tests) != NUM_OPENAT2_FLAG_TESTS);